Scale.



B. W. KING.

SCALE.

APPLICATION FILED MAY 31,1910.

i 4 Patented De0.24,1912.

3SHEBTS-SHEBT 1.

Q TA 7 5/ 50 27 17/8 Fig.2.

B. W. KING.

SCALE. 7

APPLIOATION FILED MAY 31,1910.

Patented Dec. 24, 1912 3 SHEETS-SHEET 3.

- Fig.7.

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ERT w. KING, OFDETBOIT, MICHIGAN, ASSIGNQR T0 STANDARD ooairnrme soALiiCOMPANY, LIMITED, or DETROIT, mromenn, A LTMITED PARTNERSHIP.

scans.

Specification of Letters Patent.

Patented Dec. 24, 2912'.

Application filedJiIay 31, 1.910. Serial No. 564,080.

To all whom it may concern: I

Be it known that 1, Bear Vi. Kine, a citizen of the United States. and aresident of Detroit, in the county of Wayne and State of Michigan, haveinvented a new and useful Scale, of which the following is especification.

This invention relates to computing sprung-scales equipped withcylindrical charts, and the object of my improvements is to provide aspring-scale of good capacity which shall be simple in constructionefi'icient'in operation, and compact.

In the accompanying drawings, Figure 1 is a vertical cross section ofthe case and chart on the line 11 of Fig. 2, the other parts being inelevation. Fig. 2 is a horizontal cross section on the line 2 -2 of Fig.1, the case being omitted. 3 is a vertical cross section of the case andchart on the line 3-3 of 4 of 2V modified form of this type of scale theother parts being in elevation. Fig. Ll a horizuintal cross section onthe line d e of Fig. Fig. 5 is an elevation of the scale shown in Figs.1 and 2. Fig. 6 is an elevation of the scale shown in Figs. 3 and 4 Fig.7 is a vertical cross section on the line 7? of Fig. 3. Fig. 8 is a planof the holding link for the check rod.

Similar reference characters refer to like parts throughout the severalviews.

lle'ferring to Fig. 1. 5 is a base from which the pedestals 6 projectupwardly. On these pedestals rest the knife-ed 1 T carried by the mainlever B. Any denrablc loadreceiving device may employed, that shownbeing a platform or plate 9 which is carried by the four-armed spider10. A stem 11 ha ting: an enlarged lower portion 12 extends downWardfrom this spider and is provided with a yoke 13 which rests on theknife-edges 14 carried hy tee lever 8. Upwardly projecting from the base5 is a frame, which may he formed by a plate 16 and four downwardlyextending legs 17,, which legs may be secured to the base by the screws18. Extending inward in the base and upward into the frame is an E...shaped checlerod 19, whose outer end connects to the bottom of theenlarged portion 12 of the stem, and Whose upper end cottnects to thepin 20 depending from the plate 16, by means of the link 21. This linkas shown one. larger scale in Fig. 8' is formed with shoulder" 22 andhooks 23 to engage the parts 2% and 25 of the plates 26, connected tothe bottom of the" pin .20 and to the top of the check-r0d 19. F aces"of' the parts 21 and 25 of each plate are in the 0 same plane. whilethe engaging surfaces oft a shoulder 22 and hook 23 are also in the sameplane. Because of this construction the inner end of the rod 1.9 mayswing freely and asthe link 21 is equal in lengthto the distance betweenthe knife-edges 7 and 14, l the plate 9 will always remain horizontal.

A ring 28 rests on the knife-edge 27 on the beam 8, and a coil-spring 30is tensioned between this ring and the cross bar 29. A fIO dash pot 31of any desiiied construction have a piston-rod 32 formed with a ring "33which engages a pivot 3 1 carried at the end of the lever 8. 1

Supported on the plate 16 by the: bl ogcksflfi 36 is a cross-liar 37which carries the end bars 38, which in turn support the upper cross-bar39 and the revoluhle shaft' lO. Between the bars 37 and 38 extends abracket which also furnishes a hearing for t his fifl shalt 40 andsupports a guide 41 for th'e rack-bar 4L2. ltlounted on the shaft 40arewheels 44 around which are secured the cylindrical charts 45, of anydesired type and graduated in any desired manner. ,Tl e rack-bar .2meshes with the gear 46 secured to the shaft 10. In order to hold therackhar 42 in proper engagement with the gear ttl, a small arm 48 may beformed on the lower-end thereof and carry the welgllh ill The lever 8may be bifurcated as shown in Fig. 2, and in the slot 51 may be mounteda link 52. The huife-edge liWextends aci oss this slot and through theopening. in this link. To the lower end of the link is 'erahl t secureda wei ht 5%. while the u er 20 sitated 55 axis.

ing 62 closed by a glass pane 63. Extending centrally acrossthisopening, is preferably mounted a wire 64 to assist in determining.the amount of rotation of the cylindrical charts 45 by reason of theload on the lever. The side 65 of the case may be provided with a window66 through which the mechanism can be observed.

"When the load is placed on the plate 9 [0 the knife edge 14 willdescend, andthe opposite end of the lever 8 will rise against thetension of the spring 29. Because of the inertia of the weight 54 andthe part 12, and the action of the dash-pot, the movements of the scalewill be gentle and the parts will soon come to rest. The upward movementof the rack-bar 42 will turn the cylindrical charts 45 a distanceproportionate to the load, the slight corrections necesby the changes inangularity between the rack-bar 42 and the operative line of the lever 8being taken care of in the sealing of the scale. Because of the joint55, the link 52 will be constantly held vertical and the movement of theparts will be without binding. Because of the horizontal length of thecheck rod 19, the stress on the link 21 will be slight.

Many changes in the construction of 3c scales of this type can be madeby those skilled in the art without departing from the spirit of myinvention. In Figs. 3, 4, 6 and 7 a modification is shown which embodiesthe invention. The base 7 5 ditlers but slightly from the base 5previously described, while the pedestals 6, the plate 9, the spider 10,the stem 11-12, the yoke 13, the check rod 19, and the link 21 aresimilar to the like numbered parts in Figs. 1

and 2. The scale-lever 76 is shown substantially double, the sides beingunited by a cross piece 77, but the knife-edges 7 and 14 will be thesame'a's those formerly described. The dash-pot 31, the piston rod '32,the rin 33 at the u per end of the piston rod and the knife-e go 34carried by the scale-lever may again be duplications of those formerlydescribed.

The case 80 is preferably formed with a circular flange 81. The drum 82is also in turn carry the cross-bar 39. A bracket 35' may again extendbetween the cross-bars 37 and 39, and together with the end-bars 38support the revoluble shaft 40, on which shaft are me unted the wheels44 and the cy- -lindrical charts 45. The bar 87 is toothed along itsupperportion similar to the rackbar 42, and like itis engaged by theguide 41 and meshes with the pinion 46 on the shaft 40. On the lower endof thisvrackbar is an arm 88 which carries'a small weight 89 that holdsthe toothed portion of the rack-bar against the pinion 46.

The link 90 extends through a slot.9l in the scale-lever'and connects tothe sameby means of a knife-edge 92 in a manner before described. Itsupper end may connectto the rack-bar 87 in any desired manner,

preferably through the swivel joint 93. The weight 54 ma y be replacedby the heavy shell 94, connected to the lower end of the link 90, withinwhich shell may be mounted the spriugDS which connects to the lower endof the link 90 and to the cross-bar 96.

l lxtending upward. from the base are the legs 97 which carry the plate98. TEX- tending downward -from this plate is a stem 99 which connectsto one end of the link 21. As will be noticed, the drum 82 can be swungabout the center of .the flanges 81-83 so that the window may be in anydesired position.

95 be in a vertical line central with the flanges 81-83.

If desired, a tare-beam 100 having a poise 101 can be mounted on thelever 76 by means of the connecting arms 102 which extend through slotsin the case 80. The operation of this modified form of scale is the sameas that shown in Figs. 1 and 2 and previously described.

Having now explained my construction, what I claim as my invention anddesire to secure by Letters Patent is 1. In a scale, the combination ofa base,

a housing-above the same, a beam fulcrumed intermediate its ends on saidbase, a case, an indicating chart mounted in the upper part of thehousing, connections between the chart and lever whereby the chart willbe moved by said lever, a load receiver pivotally supported the fulcrum,and having a stem extending down below the beam, a: spring engaging thebeam at the opposite side of the fulcrum to resist its movement, anL-shaped check-rod,

the end of the horizontal portion of which connects to the'lower end ofthe stem of the load-receiver and the vertical portion extending-nip inthe case, and a link engaging the upper end of the check rod to controlits movements.

2. In a scale, the combination of a base and case, a lever fulcrumedthereon intermediate its ends and having a loadlatforrn supported by thelever at one si e of the fulcrum, a spring connected to the lever at theother side at th fulcrum to resist the by said beam at one side of It istherefore necessary that the swivel-joint 93, the shell 94 and thespring load, a link connected to the lever, a coun- In testimony whereofI have signed this ter-weight connected to said link a rackspecificationin the presence of two subbar extending upward from said link,- acyscribing Witnesses.

lindrical chart, a shaft to support the same BERT W. KING. 5 mounted inthe case, a gear on said shaft in Witnesses:

mesh with said rack-bar, and a Weight on EDWARD N. PAGELSEN,

said rack bar to hold it against said gear. L. J AENICHEN.

